This Article talks about a gigantic goldfish that was found in Lake Tahoe. They also had found about 15 other goldfish in one corner. They found this problematic because goldfish are an invasive species. The goldfish and other invasive species in the waters of Lake Tahoe have been eating native species, which is harmful for the environment. Also, When the species excrete, they could cause an algal boom. They believe the reasons these goldfish and possibly other invasive fish are in the lake is because of aquarium dumping. They have found that aquarium dumping has become a common practice in the United States. They believe this could cause many problems for the native species and their environments.
I chose this article because the title made me amazed at the size of the goldfish and also that is was found in Lake Tahoe. Then after reading it, I was amazed at the effects that aquarium dumping has on the oceans and lakes environments. When an ecosystem is introduced to an invasive species, it can be incredibly harmful to the native species and environment. I believe that aquarium dumping should be monitored and fined. I believe that the world should learn from the situation in California and put a stop to the aquarium dumping.
Monster Goldfish Found in Lake Tahoe
Aquarium pets are showing up in some unlikely places, and that’s bad news for native species By Tanya Lewis and LiveScience | Thursday, February 21, 2013 |
A new kind of lake monster has been found, in the depths of Lake Tahoe: gigantic goldfish. Researchers trawling the lake for invasive fish species scooped up a goldfish that was nearly 1.5 feet long and 4.2 pounds.
"During these surveys, we've found a nice corner where there's about 15 other goldfish," environmental scientist Sudeep Chandra of the University of Nevada, Reno, told LiveScience. "It's an indication that they were schooling and spawning." The arrival of the fish, which were probably dumped there by aquarium owners, has Chandra worried — goldfish are an invasive species that could interfere with Lake Tahoe's ecosystem.
It's unclear whether the giant fish were introduced as fully grown adults, or while they were still small, Chandra said. But even a small creature can have a big impact, if there are enough of them.
The goldfish are just one of several species of invasive warm-water fishes in Lake Tahoe. "The invasion is resulting in the consumption of native species," Chandra said. What's more, the invasive fish excrete nutrients that cause algal blooms, which threaten to muddy Tahoe's clear waters. [Photos: Giant Goldfish & Other Freaky Fish]
Fish out of water
Aquarium dumping has become a common practice in the United States and elsewhere, and it's taking a toll on native wildlife. A recent report on California's aquarium trade found that fish owners and importers are introducing hardy, nonnative aquatic species to California waters. "Globally, the aquarium trade has contributed a third of the world's worst aquatic and invasive species," Williams, who was lead author of the report, told OurAmazingPlanet, a sister site of LiveScience, in January.
While the exact number of aquarium owners dumping fish is unknown, scientists know the practice is occurring because these species could not have ended up in these waters naturally. Between 20 percent and 69 percent of fish keepers surveyed in Texas admitted to dumping, according to Williams.
Other ways that invasive species find their way into natural ecosystems include aquaculture, live seafood, live bait, and fishing and
recreation vessels. More than 11 million nonnative marine organisms representing at least 102 species arrive at ports in San Francisco and Los Angeles alone, Williams has found.
The invaders include tropical fish, seaweed and snails. One of the nastiest is a deadly type of seaweed known as Caulerpa. A type of algae that produces toxic compounds that kill off fish, Caulerpa was eradicated in 2000 (at great expense) from lagoons in Southern California.
Aquarium owners should be more careful when disposing of unwanted fish and other animals, Williams cautioned. "It's pretty simple: Don't dump your fish," she said. Instead, she suggests calling the pet shop that sold the fish or your state department of fish and wildlife. (Euthanasia is another option, but simply flushing fish down the toilet can be problematic — for the fish and for your plumbing.)
So why do people dump fish? Studies of dumping have shown that size and aggressiveness of the fish are two main factors, Williams said.
The largest pet goldfish, according to the BBC, was a fish named Goldie that was 15 inches (38 cm) long and weighed more than 2 pounds (0.9 kg).